PAC09 - List of Authors (Romanenko, A.)

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Romanenko, A.

Paper	Title	Page
TU5PFP046	ILC Testing Program at Cornell University	927
	Z.A. Conway, E.P. Chojnacki, D.L. Hartill, M. Liepe, H. Padamsee, A. Romanenko, J. Sears CLASSE, Ithaca, New York
	Funding: Work Supported by the U.S. Department of Energy Cornell University’s superconducting niobium nine-elliptical-cell cavity testing and repair program is one contributor to the collaborative effort on critical SRF R&D for the ILC. The Cornell University program benefits from several unique features which provide for the rapid testing and, if necessary, repair of ILC nine-cell cavities: a continuous vertical electropolish procedure, superfluid helium second sound defect location, and tumble polishing. First, we report on the cavity 2K RF performance and the effect of micro-EP preceding the cavity test. Single-cell results at KEK have shown that micro-EP as a final surface treatment reduces the spread in gradients, but micro-EP has not yet been tried with multi-cell cavities. Secondly, we report on the highly efficient method of detecting defects using a few He-II second sound wave detectors and powering several modes of the 1.3GHz TM010 passband.

Paper

Title

Page

TU5PFP046

ILC Testing Program at Cornell University

927

Z.A. Conway, E.P. Chojnacki, D.L. Hartill, M. Liepe, H. Padamsee, A. Romanenko, J. Sears
CLASSE, Ithaca, New York

Funding: Work Supported by the U.S. Department of Energy

Cornell University’s superconducting niobium nine-elliptical-cell cavity testing and repair program is one contributor to the collaborative effort on critical SRF R&D for the ILC. The Cornell University program benefits from several unique features which provide for the rapid testing and, if necessary, repair of ILC nine-cell cavities: a continuous vertical electropolish procedure, superfluid helium second sound defect location, and tumble polishing. First, we report on the cavity 2K RF performance and the effect of micro-EP preceding the cavity test. Single-cell results at KEK have shown that micro-EP as a final surface treatment reduces the spread in gradients, but micro-EP has not yet been tried with multi-cell cavities. Secondly, we report on the highly efficient method of detecting defects using a few He-II second sound wave detectors and powering several modes of the 1.3GHz TM010 passband.